• A black rectangular sine wave brushless motor controller with a white label, featuring multiple colored wires and connectors, shown on a white background.
  • A black rectangular electronic control module with a ribbed metal surface and multiple multicolored wires with connectors, photographed on a plain white background.
  • A 16-bit motor controller module with a black metal casing and multiple colorful wires extending from the sides, photographed on a white background.
  • A black rectangular electronic controller module with multiple colored wires and connectors, photographed on a plain white background.
  • A black metal electronic controller module with multiple multicolored wires and connectors attached to the top, shown against a plain white background.
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Charge My E-Bike

24V 36V 48V 20A Sine Wave eBike Controller

24V 36V 48V 20A Sine Wave eBike Controller

$52.32 USD
$17.44 USD $52.32 USD
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24V 36V 48V 20A Sine Wave eBike Controller – 350W/500W, S866 & SW900 Compatible

Get your electric bike or scooter running smoothly with this 20A sine wave brushless motor controller, designed for compatible 24V, 36V, and 48V electric drive systems. Rated for 350W and 500W applications, this controller supports a range of common e-bike functions, including throttle control, pedal assist, electronic braking, lighting, and LCD connections.

Designed for systems using the No. 2 communication protocol, it is listed for use with compatible S866, V889, TF-100, and SW900 instrument displays. Always verify the exact display model, protocol, connector pinout, and controller configuration before ordering.

Key Features

  • Multiple Voltage Options: Designed for compatible 24V, 36V, and 48V battery systems.

  • 20A Current Rating: Listed for 350W and 500W brushless motor applications. Confirm whether 20A represents the battery current limit.

  • Sine Wave Motor Control: Designed for smooth operation with compatible brushless motors.

  • LCD Display Compatibility: Supports compatible No. 2 protocol displays, including listed S866 and SW900 models.

  • Throttle Support: Connection for a compatible electric throttle.

  • Pedal Assist (PAS): Supports pedal-assist sensor connections.

  • Electronic Brake Input: Includes an e-brake connection for compatible brake cutoff systems.

  • Lighting Support: Provides a listed headlight power connection.

  • Hall Sensor Support: Includes a Hall sensor connector for compatible motors.

  • Additional Connections: The listing identifies an anti-theft power connection and a self-learning function.

  • Compact Aluminum Alloy Housing: Measures approximately 10 × 7 × 3.3 cm.

Product Specifications

Specification Details
Brand Unbranded
Product type Sine wave brushless motor controller
Working voltage 24V / 36V / 48V
Rated power 350W / 500W
Listed current 20A
Motor type Compatible brushless motor
Display protocol No. 2 protocol; compatibility required
Listed displays S866, V889, TF-100, SW900 — verify exact compatibility
Housing material Aluminum alloy
Dimensions Approximately 10 × 7 × 3.3 cm
MOSFET model HY3208, as listed
Connections/functions Display, throttle, Hall sensors, e-brake, PAS, headlight, anti-theft power, self-learning
Battery included No
Wireless functionality Not included, according to listing
Certification listed CE
Origin Mainland China

Display and Wiring Compatibility

This controller is intended for compatible No. 2 protocol displays. Display models with similar names may use different communication protocols or wiring arrangements, so confirm compatibility with your existing display before purchasing.

Before installation, verify:

  • Battery voltage and polarity

  • Motor phase wires and Hall sensor connections

  • LCD communication protocol and pinout

  • Throttle wiring and signal voltage

  • PAS and brake cutoff connections

  • Lighting and auxiliary power requirements

Never connect wires based on color alone. Follow the manufacturer's wiring diagram, disconnect the battery before installation, and verify connector pinouts before applying power.

Troubleshooting Guide

Error E06 – Undervoltage or Voltage Setting

The supplier states that the controller may default to 36V when this error appears. If using a compatible 24V system, check the battery condition and verify the display's voltage setting. Follow the manufacturer's instructions for changing voltage settings and allow the system to complete the adjustment without operating the controls during the process.

Do not change voltage settings to bypass a genuine low-battery condition.

Error E07 – Throttle or PAS Wiring

The supplier associates this error with incorrect PAS or throttle wiring. Disconnect the battery and compare the connectors with the manufacturer's wiring diagram before making corrections. Do not assume that wire colors are universal.

Error E10 – Display Connection

The supplier identifies E10 as a possible loose display connection. With the battery disconnected, inspect the instrument connector for loose pins, damage, or poor seating, then reconnect it securely.

Error meanings can vary by display and controller version, so confirm the code against the correct product manual.

Frequently Asked Questions

Does this controller include a battery?

No. The listing specifies that the controller is sold without a battery.

Can it work with a 48V battery?

It is listed for compatible 48V systems. Verify the controller's actual voltage configuration and maximum input voltage before connecting the battery.

Will it work with an S866 or SW900 display?

Those display families are listed, but compatibility depends on the exact model, No. 2 communication protocol, connector, and pinout.

Is it suitable for a 350W or 500W motor?

The supplier lists both power ratings. Confirm the motor's voltage, current requirements, Hall sensor configuration, and wiring before installation.

Does it support pedal assist and a throttle?

The listing identifies connections for both PAS and throttle operation. Confirm the wiring diagram and supported sensor types for your particular system.

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